En Thu, 24 May 2007 12:18:36 -0300, Gre7g Luterman <[EMAIL PROTECTED]> escribió:
> I'm writing a C program which handles Python objects in different ways > based > on their type. I do a PyInstance_Check(PyObj) to determine if the PyObj > is > an instance, but it is returning 0 on a lot of stuff that I thought > would be > an instance. So I did the following simple test on three things that look > like instances: PyInstance refers to instances of old style classes, now used much less than before. >>>> class b(dict): pass > ... >>>> type(b()) > <class '__main__.b'> > > I was relieved that a() returns an instance, but I was surprised that > Exceptions aren't really instances at all. And what's the deal with > derving > a class from a standard type like a dictionary? I thought for sure, that > would be an instance, but this shows it is a class?!? The "instance" type refers to said instances of old-style classes. For new style classes, when you call type(somenewstyleclass) you usually get `type`, and for its instances, you get somenewstyleclass. > Can anyone explain the last one and/or give me a simple test I can do in > C > to determine whether a Python object is "instance-like"? What do you mean by "instance-like"? All new objects are instances of its class, and all new classes are instances of type (or a custom metaclass). -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
